A follow-up study will be conducted on 267 children and will allow comparison between children that developed overweight with the ones who did not. Subjects will be requited at 10 years of age from a previous project. These children have been studied when they were 6-18 months old and a follow-up was conducted at 4 years of age. Sixteen percent of the children were overweight at 4 years of age and retrospective data of e.g. food intake, blood lipids and anthropometric measurements exists. In the present follow-up data regarding food and physical activity habits, anthropometric measurements and blood samples of e.g. blood lipids, IGF1 will be collected.